In this article, plants used in biofuel production and biofuel technologies were investigated. In the production of biodiesel and bioethanol rapeseed, wheat, straw, sorghum, rice, potato, rye, barley, corn, sugar beet, sugar cane, sweet sorghum and plants such as tobacco are used. In biogas production, animal, agricultural, food industry, vegetable, fruit, oil industry and slaughterhouse residues and waste water treatment sludge are used. Biofuels bioethanol, biodiesel, biogas, biomethanol, biodimethyl ether and bio-oil. The most common biofuels today are bioethanol and biodiesel. Biofuels are based on renewable biological resources, have very good biodegradability, non-toxicity, It has been determined that it increases its usability due to reasons such as very low emissions when burned and being environmentally friendly.